If you are getting unwanted multiple boot screenThen Follow these Steps.1> Right Click on My Computer2>Select Properties3>Select Advanced Tab4>Select Settings In the Startup & Recovery Section(3rd grp)5>Select the operating system which u want.6>And Click OK.7>Further again press the setting and click on Edit.8>It will open boot.ini File.9>Now u can delete those o/s which you don't want to be displayed.

Note: For deleting operating systems from boot.ini file, keep it mind that you can'tdelete that o/s which is selected by default there. Beforemaking any changes make a copy of boot.ini file.